Turbo question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

86chevysky · 10-03-2011, 12:18 AM

Ok i have a 4 bolt main 350 out of a 69 corvette. the question is can my motor handle any boost from a turbo. If so how much could it handle? The motor has less than 20,000 miles on it. Thanks for your help guy.
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Pop's C-10 · 10-03-2011, 02:03 AM

maybe 5lbs..but you need to have tha fuel & ign. system up to snuff.. you can always build tha system on tha motor you got..run low boost, then build a stronger one to hold more boost.

my4by2 · 10-03-2011, 02:51 AM

Too little info to really tell - does the motor have forged pistons & what's the compression ratio? If it's hyper-eutectic's or cast pistons & you run much boost you'll mess 'em up quick & if your compression is already high you'll do about the same...

If it's well built & has the right parts you should be able to run up to around 8-psi as long as you use premium fuel, watch the timing & run some sort of intercooler.

86chevysky · 10-04-2011, 09:23 PM

So really it wouldnt be a wise idea to put a single turbo on my truck?
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my4by2 · 10-04-2011, 09:32 PM

Not necessarily saying that, you just need to know more about your motor before you go through the expense of installing a turbo & it possibly destroying or damaging your engine.

86chevysky · 10-04-2011, 09:49 PM

Well i looked up vins for my motor and its tellin me that the compression is pretty low like 8.5:1. And has hyper piston if i read it right. 39007010 is the cast number and it is 350 4 bolt main.
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gofastbobby · 10-04-2011, 09:52 PM

Do it!
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my4by2 · 10-04-2011, 09:54 PM

Well, you could probably run one then, just keep your boost below 8psi. You'll also need to run something like an MSD boost timing control that will retard your timing when it senses knocking - detonation will KILL hyper-eutectic pistons in a hurry!!!

Realistically given the cost comparison you'd be MUCH better off simply converting to an LS based motor. But if you're stuck on the turbo deal then just go at it slow & set-it up right - better to spend a little more now than a lot later!!!

86chevysky · 10-04-2011, 10:09 PM

How do i do the LS based motor
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my4by2 · 10-04-2011, 10:13 PM

Check out the LSX Swap section in the engine performance area on here - there is a TON of information & good experience on there to assist you!!! Just go to the little "Forum Jump" deal at the bottom right & scroll down until you find it.

There's a ton of companies that sell stand-alone EFI harnesses for most of the motors available. You can even swap it over to run your carburetor on there if you'd like that look better - but why sacrifice the mileage if you ask me...

86chevysky · 10-04-2011, 10:16 PM

I can get a more power out of an ls based motor over a turbo carb
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my4by2 · 10-04-2011, 10:19 PM

EASILY!!!! Just getting a custom tune on a factory ECM with a late model 6.0L will net you incredible power & drivability!!!!

86chevysky · 10-04-2011, 10:50 PM

Ok well thank you man.
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10-03-2011, 12:18 AM	#1
86chevysky Registered User Join Date: Jun 2010 Location: Broken Arrow, Oklahoma Posts: 33	Turbo question Ok i have a 4 bolt main 350 out of a 69 corvette. the question is can my motor handle any boost from a turbo. If so how much could it handle? The motor has less than 20,000 miles on it. Thanks for your help guy. Posted via Mobile Device

10-03-2011, 02:03 AM	#2
Pop's C-10 Registered User Join Date: Jul 2010 Location: memphis Posts: 2,537	Re: Turbo question maybe 5lbs..but you need to have tha fuel & ign. system up to snuff.. you can always build tha system on tha motor you got..run low boost, then build a stronger one to hold more boost. __________________ 1981 C-10 (Pop's) 1978 Camaro 2006 Lacrosse

10-03-2011, 02:51 AM	#3
my4by2 Registered User Join Date: Dec 2010 Location: Hot Springs, AR. Posts: 1,215	Re: Turbo question Too little info to really tell - does the motor have forged pistons & what's the compression ratio? If it's hyper-eutectic's or cast pistons & you run much boost you'll mess 'em up quick & if your compression is already high you'll do about the same... If it's well built & has the right parts you should be able to run up to around 8-psi as long as you use premium fuel, watch the timing & run some sort of intercooler. __________________ 1977 Chevrolet K30 LWB Crew Cab 497HP Mast Motorsports 6.0L LY6 HO engine GM NV4500 5-speed, Centerforce clutch + NP205 D60 + 14-bolt FF w/ Eaton posi + disc brakes Skyjacker 2.5" full spring lift w/ Nitro shocks Custom paint + interior http://67-72chevytrucks.com/vboard/s...d.php?t=435722

10-04-2011, 09:23 PM	#4
86chevysky Registered User Join Date: Jun 2010 Location: Broken Arrow, Oklahoma Posts: 33	Re: Turbo question So really it wouldnt be a wise idea to put a single turbo on my truck? Posted via Mobile Device

10-04-2011, 09:32 PM	#5
my4by2 Registered User Join Date: Dec 2010 Location: Hot Springs, AR. Posts: 1,215	Re: Turbo question Not necessarily saying that, you just need to know more about your motor before you go through the expense of installing a turbo & it possibly destroying or damaging your engine.

10-04-2011, 09:49 PM	#6
86chevysky Registered User Join Date: Jun 2010 Location: Broken Arrow, Oklahoma Posts: 33	Re: Turbo question Well i looked up vins for my motor and its tellin me that the compression is pretty low like 8.5:1. And has hyper piston if i read it right. 39007010 is the cast number and it is 350 4 bolt main. Posted via Mobile Device

10-04-2011, 09:52 PM	#7
gofastbobby Registered User Join Date: Mar 2011 Location: Kalamazoo, MI Posts: 120	Re: Turbo question Do it! Posted via Mobile Device __________________ '76 C10 "BIG10" SWB 454/400 Mostly Stock.

10-04-2011, 09:54 PM	#8
my4by2 Registered User Join Date: Dec 2010 Location: Hot Springs, AR. Posts: 1,215	Re: Turbo question Well, you could probably run one then, just keep your boost below 8psi. You'll also need to run something like an MSD boost timing control that will retard your timing when it senses knocking - detonation will KILL hyper-eutectic pistons in a hurry!!! Realistically given the cost comparison you'd be MUCH better off simply converting to an LS based motor. But if you're stuck on the turbo deal then just go at it slow & set-it up right - better to spend a little more now than a lot later!!!

10-04-2011, 10:09 PM	#9
86chevysky Registered User Join Date: Jun 2010 Location: Broken Arrow, Oklahoma Posts: 33	Re: Turbo question How do i do the LS based motor Posted via Mobile Device

10-04-2011, 10:13 PM	#10
my4by2 Registered User Join Date: Dec 2010 Location: Hot Springs, AR. Posts: 1,215	Re: Turbo question Check out the LSX Swap section in the engine performance area on here - there is a TON of information & good experience on there to assist you!!! Just go to the little "Forum Jump" deal at the bottom right & scroll down until you find it. There's a ton of companies that sell stand-alone EFI harnesses for most of the motors available. You can even swap it over to run your carburetor on there if you'd like that look better - but why sacrifice the mileage if you ask me...

10-04-2011, 10:16 PM	#11
86chevysky Registered User Join Date: Jun 2010 Location: Broken Arrow, Oklahoma Posts: 33	Re: Turbo question I can get a more power out of an ls based motor over a turbo carb Posted via Mobile Device

10-04-2011, 10:19 PM	#12
my4by2 Registered User Join Date: Dec 2010 Location: Hot Springs, AR. Posts: 1,215	Re: Turbo question EASILY!!!! Just getting a custom tune on a factory ECM with a late model 6.0L will net you incredible power & drivability!!!!

10-04-2011, 10:50 PM	#13
86chevysky Registered User Join Date: Jun 2010 Location: Broken Arrow, Oklahoma Posts: 33	Re: Turbo question Ok well thank you man. Posted via Mobile Device



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